Sims 4 suggestions

@HeroScarlet1233, my guess is that EA only has one type of Alien because this is the classical "Alien" that people always claim to see in real life. 🤨🙂 They are always bald with very large and very dark eyes.  EA/Maxis has allowed for a little more creativity with this traditional Alien template by letting us choose a number of skin colors, the ability to have various facial features, and a few slightly different eye types (though all of the types are still very dark).  But the Aliens in the game are still based on the classic archetype.  There are no hairy Aliens or Aliens with scales or feathers.  No reptilian or amphibian types.  Not Insect types, and no blob types of aliens  -- even though we see those types all over Science Fiction. (The closest the game has to these types is the small aliens that your Sims can find by either taking a ride on the rocket, or by investigating the little craters that are on the planet Sixam or by the Science Lab in Get to Work. Those are really just decorations.  

As a fan of Science Fiction, I would like your idea! 🤓❤️  It reminds me a bit of the EA game called "Spore" that was created by the creator of The Sims , Will Wright!😎  While I don't think your idea would be added to the Sims 4, they might do something like this in the future , whether it is in a future Sims version or an entirely different game! 🥳